From f540eae7fe740994ed5c754ca5fa7e84824e43eb Mon Sep 17 00:00:00 2001
From: Sebastiaan van Stijn <github@gone.nl>
Date: Sun, 23 Dec 2018 12:27:52 +0100
Subject: [PATCH] Docs: add note about management commands targeting a manager

Signed-off-by: Sebastiaan van Stijn <github@gone.nl>
---
 docs/reference/commandline/node_demote.md      |  6 ++++--
 docs/reference/commandline/node_inspect.md     |  4 ++++
 docs/reference/commandline/node_ls.md          |  4 ++++
 docs/reference/commandline/node_promote.md     |  4 ++++
 docs/reference/commandline/node_ps.md          |  8 +++++++-
 docs/reference/commandline/node_rm.md          |  5 ++++-
 docs/reference/commandline/node_update.md      |  4 ++++
 docs/reference/commandline/secret_create.md    |  6 +++++-
 docs/reference/commandline/secret_inspect.md   |  7 +++++--
 docs/reference/commandline/secret_ls.md        |  4 ++++
 docs/reference/commandline/secret_rm.md        |  7 +++++--
 docs/reference/commandline/service.md          |  3 +++
 docs/reference/commandline/service_create.md   |  7 +++++--
 docs/reference/commandline/service_inspect.md  |  7 +++++--
 docs/reference/commandline/service_logs.md     |  4 ++++
 docs/reference/commandline/service_ls.md       |  7 +++++--
 docs/reference/commandline/service_ps.md       |  7 +++++--
 docs/reference/commandline/service_rm.md       |  7 +++++--
 docs/reference/commandline/service_rollback.md |  7 +++++--
 docs/reference/commandline/service_scale.md    |  4 ++++
 docs/reference/commandline/service_update.md   | 10 +++++++---
 docs/reference/commandline/stack_deploy.md     |  8 ++++++--
 docs/reference/commandline/stack_ls.md         |  5 +++++
 docs/reference/commandline/stack_ps.md         |  8 ++++++--
 docs/reference/commandline/stack_rm.md         |  8 ++++++--
 docs/reference/commandline/stack_services.md   |  8 ++++++--
 docs/reference/commandline/swarm_ca.md         |  6 +++++-
 docs/reference/commandline/swarm_join_token.md |  4 ++++
 docs/reference/commandline/swarm_unlock.md     |  4 ++++
 docs/reference/commandline/swarm_unlock_key.md |  4 ++++
 docs/reference/commandline/swarm_update.md     |  6 +++++-
 31 files changed, 149 insertions(+), 34 deletions(-)

diff --git a/docs/reference/commandline/node_demote.md b/docs/reference/commandline/node_demote.md
index e978fa7fcbe7..cf13b909656f 100644
--- a/docs/reference/commandline/node_demote.md
+++ b/docs/reference/commandline/node_demote.md
@@ -27,9 +27,11 @@ Options:
 
 ## Description
 
-Demotes an existing manager so that it is no longer a manager. This command
-targets a docker engine that is a manager in the swarm.
+Demotes an existing manager so that it is no longer a manager.
 
+> **Note**: This is a cluster management command, and must be executed on a swarm
+> manager node. To learn about managers and workers, refer to the [Swarm mode
+> section](https://docs.docker.com/engine/swarm/) in the documentation.
 
 ## Examples
 
diff --git a/docs/reference/commandline/node_inspect.md b/docs/reference/commandline/node_inspect.md
index e72d0ed1a513..fb71b5d24c8e 100644
--- a/docs/reference/commandline/node_inspect.md
+++ b/docs/reference/commandline/node_inspect.md
@@ -34,6 +34,10 @@ given template for each result. Go's
 [text/template](http://golang.org/pkg/text/template/) package describes all the
 details of the format.
 
+> **Note**: This is a cluster management command, and must be executed on a swarm
+> manager node. To learn about managers and workers, refer to the [Swarm mode
+> section](https://docs.docker.com/engine/swarm/) in the documentation.
+
 ## Examples
 
 ### Inspect a node
diff --git a/docs/reference/commandline/node_ls.md b/docs/reference/commandline/node_ls.md
index 503354492118..bdde2437799d 100644
--- a/docs/reference/commandline/node_ls.md
+++ b/docs/reference/commandline/node_ls.md
@@ -36,6 +36,10 @@ Lists all the nodes that the Docker Swarm manager knows about. You can filter
 using the `-f` or `--filter` flag. Refer to the [filtering](#filtering) section
 for more information about available filter options.
 
+> **Note**: This is a cluster management command, and must be executed on a swarm
+> manager node. To learn about managers and workers, refer to the [Swarm mode
+> section](https://docs.docker.com/engine/swarm/) in the documentation.
+
 ## Examples
 
 ```bash
diff --git a/docs/reference/commandline/node_promote.md b/docs/reference/commandline/node_promote.md
index e10e99965763..bfde58b957ef 100644
--- a/docs/reference/commandline/node_promote.md
+++ b/docs/reference/commandline/node_promote.md
@@ -28,6 +28,10 @@ Options:
 
 Promotes a node to manager. This command can only be executed on a manager node.
 
+> **Note**: This is a cluster management command, and must be executed on a swarm
+> manager node. To learn about managers and workers, refer to the [Swarm mode
+> section](https://docs.docker.com/engine/swarm/) in the documentation.
+
 ## Examples
 
 ```bash
diff --git a/docs/reference/commandline/node_ps.md b/docs/reference/commandline/node_ps.md
index 81e3ca18d78b..ae785cd4efa2 100644
--- a/docs/reference/commandline/node_ps.md
+++ b/docs/reference/commandline/node_ps.md
@@ -32,7 +32,13 @@ Options:
 
 ## Description
 
-Lists all the tasks on a Node that Docker knows about. You can filter using the `-f` or `--filter` flag. Refer to the [filtering](#filtering) section for more information about available filter options.
+Lists all the tasks on a Node that Docker knows about. You can filter using the
+`-f` or `--filter` flag. Refer to the [filtering](#filtering) section for more
+information about available filter options.
+
+> **Note**: This is a cluster management command, and must be executed on a swarm
+> manager node. To learn about managers and workers, refer to the [Swarm mode
+> section](https://docs.docker.com/engine/swarm/) in the documentation.
 
 ## Examples
 
diff --git a/docs/reference/commandline/node_rm.md b/docs/reference/commandline/node_rm.md
index 545b091086a4..0034d0ab7ab1 100644
--- a/docs/reference/commandline/node_rm.md
+++ b/docs/reference/commandline/node_rm.md
@@ -30,8 +30,11 @@ Options:
 
 ## Description
 
-When run from a manager node, removes the specified nodes from a swarm.
+Removes the specified nodes from a swarm.
 
+> **Note**: This is a cluster management command, and must be executed on a swarm
+> manager node. To learn about managers and workers, refer to the [Swarm mode
+> section](https://docs.docker.com/engine/swarm/) in the documentation.
 
 ## Examples
 
diff --git a/docs/reference/commandline/node_update.md b/docs/reference/commandline/node_update.md
index 61e0e16a3093..972f74474bd6 100644
--- a/docs/reference/commandline/node_update.md
+++ b/docs/reference/commandline/node_update.md
@@ -32,6 +32,10 @@ Options:
 
 Update metadata about a node, such as its availability, labels, or roles.
 
+> **Note**: This is a cluster management command, and must be executed on a swarm
+> manager node. To learn about managers and workers, refer to the [Swarm mode
+> section](https://docs.docker.com/engine/swarm/) in the documentation.
+
 ## Examples
 
 ### Add label metadata to a node
diff --git a/docs/reference/commandline/secret_create.md b/docs/reference/commandline/secret_create.md
index 66fc78f9f843..30839e7d7b25 100644
--- a/docs/reference/commandline/secret_create.md
+++ b/docs/reference/commandline/secret_create.md
@@ -27,10 +27,14 @@ Options:
 
 ## Description
 
-Creates a secret using standard input or from a file for the secret content. You must run this command on a manager node.
+Creates a secret using standard input or from a file for the secret content.
 
 For detailed information about using secrets, refer to [manage sensitive data with Docker secrets](https://docs.docker.com/engine/swarm/secrets/).
 
+> **Note**: This is a cluster management command, and must be executed on a swarm
+> manager node. To learn about managers and workers, refer to the [Swarm mode
+> section](https://docs.docker.com/engine/swarm/) in the documentation.
+
 ## Examples
 
 ### Create a secret
diff --git a/docs/reference/commandline/secret_inspect.md b/docs/reference/commandline/secret_inspect.md
index 349e28e6e254..46d6a043cd15 100644
--- a/docs/reference/commandline/secret_inspect.md
+++ b/docs/reference/commandline/secret_inspect.md
@@ -27,8 +27,7 @@ Options:
 
 ## Description
 
-Inspects the specified secret. This command has to be run targeting a manager
-node.
+Inspects the specified secret.
 
 By default, this renders all results in a JSON array. If a format is specified,
 the given template will be executed for each result.
@@ -38,6 +37,10 @@ describes all the details of the format.
 
 For detailed information about using secrets, refer to [manage sensitive data with Docker secrets](https://docs.docker.com/engine/swarm/secrets/).
 
+> **Note**: This is a cluster management command, and must be executed on a swarm
+> manager node. To learn about managers and workers, refer to the [Swarm mode
+> section](https://docs.docker.com/engine/swarm/) in the documentation.
+
 ## Examples
 
 ### Inspect a secret by name or ID
diff --git a/docs/reference/commandline/secret_ls.md b/docs/reference/commandline/secret_ls.md
index 5fed7732ab75..a2bfae73f1c4 100644
--- a/docs/reference/commandline/secret_ls.md
+++ b/docs/reference/commandline/secret_ls.md
@@ -36,6 +36,10 @@ Run this command on a manager node to list the secrets in the swarm.
 
 For detailed information about using secrets, refer to [manage sensitive data with Docker secrets](https://docs.docker.com/engine/swarm/secrets/).
 
+> **Note**: This is a cluster management command, and must be executed on a swarm
+> manager node. To learn about managers and workers, refer to the [Swarm mode
+> section](https://docs.docker.com/engine/swarm/) in the documentation.
+
 ## Examples
 
 ```bash
diff --git a/docs/reference/commandline/secret_rm.md b/docs/reference/commandline/secret_rm.md
index 3fc90a2dd0cb..4069fb842dfe 100644
--- a/docs/reference/commandline/secret_rm.md
+++ b/docs/reference/commandline/secret_rm.md
@@ -29,11 +29,14 @@ Options:
 
 ## Description
 
-Removes the specified secrets from the swarm. This command has to be run
-targeting a manager node.
+Removes the specified secrets from the swarm.
 
 For detailed information about using secrets, refer to [manage sensitive data with Docker secrets](https://docs.docker.com/engine/swarm/secrets/).
 
+> **Note**: This is a cluster management command, and must be executed on a swarm
+> manager node. To learn about managers and workers, refer to the [Swarm mode
+> section](https://docs.docker.com/engine/swarm/) in the documentation.
+
 ## Examples
 
 This example removes a secret:
diff --git a/docs/reference/commandline/service.md b/docs/reference/commandline/service.md
index a680304650e0..5e69c04d8d39 100644
--- a/docs/reference/commandline/service.md
+++ b/docs/reference/commandline/service.md
@@ -40,3 +40,6 @@ Run 'docker service COMMAND --help' for more information on a command.
 
 Manage services.
 
+> **Note**: This is a cluster management command, and must be executed on a swarm
+> manager node. To learn about managers and workers, refer to the [Swarm mode
+> section](https://docs.docker.com/engine/swarm/) in the documentation.
diff --git a/docs/reference/commandline/service_create.md b/docs/reference/commandline/service_create.md
index b6f773c801e9..7443979903ba 100644
--- a/docs/reference/commandline/service_create.md
+++ b/docs/reference/commandline/service_create.md
@@ -92,8 +92,11 @@ Options:
 
 ## Description
 
-Creates a service as described by the specified parameters. You must run this
-command on a manager node.
+Creates a service as described by the specified parameters.
+
+> **Note**: This is a cluster management command, and must be executed on a swarm
+> manager node. To learn about managers and workers, refer to the [Swarm mode
+> section](https://docs.docker.com/engine/swarm/) in the documentation.
 
 ## Examples
 
diff --git a/docs/reference/commandline/service_inspect.md b/docs/reference/commandline/service_inspect.md
index 1149b7dd3a37..58208464ca0b 100644
--- a/docs/reference/commandline/service_inspect.md
+++ b/docs/reference/commandline/service_inspect.md
@@ -28,8 +28,7 @@ Options:
 
 ## Description
 
-Inspects the specified service. This command has to be run targeting a manager
-node.
+Inspects the specified service.
 
 By default, this renders all results in a JSON array. If a format is specified,
 the given template will be executed for each result.
@@ -37,6 +36,10 @@ the given template will be executed for each result.
 Go's [text/template](http://golang.org/pkg/text/template/) package
 describes all the details of the format.
 
+> **Note**: This is a cluster management command, and must be executed on a swarm
+> manager node. To learn about managers and workers, refer to the [Swarm mode
+> section](https://docs.docker.com/engine/swarm/) in the documentation.
+
 ## Examples
 
 ### Inspect a service by name or ID
diff --git a/docs/reference/commandline/service_logs.md b/docs/reference/commandline/service_logs.md
index 560090a16708..4a8aaf977862 100644
--- a/docs/reference/commandline/service_logs.md
+++ b/docs/reference/commandline/service_logs.md
@@ -35,6 +35,10 @@ Options:
 
 The `docker service logs` command batch-retrieves logs present at the time of execution.
 
+> **Note**: This is a cluster management command, and must be executed on a swarm
+> manager node. To learn about managers and workers, refer to the [Swarm mode
+> section](https://docs.docker.com/engine/swarm/) in the documentation.
+
 The `docker service logs` command can be used with either the name or ID of a
 service, or with the ID of a task. If a service is passed, it will display logs
 for all of the containers in that service. If a task is passed, it will only
diff --git a/docs/reference/commandline/service_ls.md b/docs/reference/commandline/service_ls.md
index 95346759a36a..407e8ade2742 100644
--- a/docs/reference/commandline/service_ls.md
+++ b/docs/reference/commandline/service_ls.md
@@ -32,8 +32,11 @@ Options:
 
 ## Description
 
-This command when run targeting a manager, lists services are running in the
-swarm.
+This command lists services are running in the swarm.
+
+> **Note**: This is a cluster management command, and must be executed on a swarm
+> manager node. To learn about managers and workers, refer to the [Swarm mode
+> section](https://docs.docker.com/engine/swarm/) in the documentation.
 
 ## Examples
 
diff --git a/docs/reference/commandline/service_ps.md b/docs/reference/commandline/service_ps.md
index 4a9ebc449f1d..ed7142c6c46d 100644
--- a/docs/reference/commandline/service_ps.md
+++ b/docs/reference/commandline/service_ps.md
@@ -32,8 +32,11 @@ Options:
 
 ## Description
 
-Lists the tasks that are running as part of the specified services. This command
-has to be run targeting a manager node.
+Lists the tasks that are running as part of the specified services.
+
+> **Note**: This is a cluster management command, and must be executed on a swarm
+> manager node. To learn about managers and workers, refer to the [Swarm mode
+> section](https://docs.docker.com/engine/swarm/) in the documentation.
 
 ## Examples
 
diff --git a/docs/reference/commandline/service_rm.md b/docs/reference/commandline/service_rm.md
index a5d5d5247716..2c950d6a6921 100644
--- a/docs/reference/commandline/service_rm.md
+++ b/docs/reference/commandline/service_rm.md
@@ -29,8 +29,11 @@ Options:
 
 ## Description
 
-Removes the specified services from the swarm. This command has to be run
-targeting a manager node.
+Removes the specified services from the swarm.
+
+> **Note**: This is a cluster management command, and must be executed on a swarm
+> manager node. To learn about managers and workers, refer to the [Swarm mode
+> section](https://docs.docker.com/engine/swarm/) in the documentation.
 
 ## Examples
 
diff --git a/docs/reference/commandline/service_rollback.md b/docs/reference/commandline/service_rollback.md
index 927fd4acfb73..fbacc8c6bb1f 100644
--- a/docs/reference/commandline/service_rollback.md
+++ b/docs/reference/commandline/service_rollback.md
@@ -28,8 +28,11 @@ Options:
 
 ## Description
 
-Roll back a specified service to its previous version from the swarm. This command must be run
-targeting a manager node.
+Roll back a specified service to its previous version from the swarm.
+
+> **Note**: This is a cluster management command, and must be executed on a swarm
+> manager node. To learn about managers and workers, refer to the [Swarm mode
+> section](https://docs.docker.com/engine/swarm/) in the documentation.
 
 ## Examples
 
diff --git a/docs/reference/commandline/service_scale.md b/docs/reference/commandline/service_scale.md
index 1cd512414ca9..c56fb562133f 100644
--- a/docs/reference/commandline/service_scale.md
+++ b/docs/reference/commandline/service_scale.md
@@ -33,6 +33,10 @@ services which are global mode. The command will return immediately, but the
 actual scaling of the service may take some time. To stop all replicas of a
 service while keeping the service active in the swarm you can set the scale to 0.
 
+> **Note**: This is a cluster management command, and must be executed on a swarm
+> manager node. To learn about managers and workers, refer to the [Swarm mode
+> section](https://docs.docker.com/engine/swarm/) in the documentation.
+
 ## Examples
 
 ### Scale a single service
diff --git a/docs/reference/commandline/service_update.md b/docs/reference/commandline/service_update.md
index ed11080fc5c7..f9b51edf1b05 100644
--- a/docs/reference/commandline/service_update.md
+++ b/docs/reference/commandline/service_update.md
@@ -109,9 +109,9 @@ Options:
 
 ## Description
 
-Updates a service as described by the specified parameters. This command has to be run targeting a manager node.
-The parameters are the same as [`docker service create`](service_create.md). Please look at the description there
-for further information.
+Updates a service as described by the specified parameters. The parameters are
+the same as [`docker service create`](service_create.md). Refer to the description
+there for further information.
 
 Normally, updating a service will only cause the service's tasks to be replaced with new ones if a change to the
 service requires recreating the tasks for it to take effect. For example, only changing the
@@ -119,6 +119,10 @@ service requires recreating the tasks for it to take effect. For example, only c
 setting. However, the `--force` flag will cause the tasks to be recreated anyway. This can be used to perform a
 rolling restart without any changes to the service parameters.
 
+> **Note**: This is a cluster management command, and must be executed on a swarm
+> manager node. To learn about managers and workers, refer to the [Swarm mode
+> section](https://docs.docker.com/engine/swarm/) in the documentation.
+
 ## Examples
 
 ### Update a service
diff --git a/docs/reference/commandline/stack_deploy.md b/docs/reference/commandline/stack_deploy.md
index 334d5cfb5a0d..d215149557c9 100644
--- a/docs/reference/commandline/stack_deploy.md
+++ b/docs/reference/commandline/stack_deploy.md
@@ -37,8 +37,12 @@ Options:
 
 ## Description
 
-Create and update a stack from a `compose` file on the swarm. This command has to
-be run targeting a manager node.
+Create and update a stack from a `compose` file on the swarm.
+
+> **Note**: This is a cluster management command. When using swarm as an orchestrator,
+> this command must be executed on a swarm manager node. To learn about managers
+> and workers, refer to the [Swarm mode section](https://docs.docker.com/engine/swarm/)
+> in the documentation.
 
 ## Examples
 
diff --git a/docs/reference/commandline/stack_ls.md b/docs/reference/commandline/stack_ls.md
index dd0857ebc960..3fa205aa3ffa 100644
--- a/docs/reference/commandline/stack_ls.md
+++ b/docs/reference/commandline/stack_ls.md
@@ -35,6 +35,11 @@ Options:
 
 Lists the stacks.
 
+> **Note**: This is a cluster management command. When using swarm as an orchestrator,
+> this command must be executed on a swarm manager node. To learn about managers
+> and workers, refer to the [Swarm mode section](https://docs.docker.com/engine/swarm/)
+> in the documentation.
+
 ## Examples
 
 The following command shows all stacks and some additional information:
diff --git a/docs/reference/commandline/stack_ps.md b/docs/reference/commandline/stack_ps.md
index bf25c722b2cd..693871d79c2c 100644
--- a/docs/reference/commandline/stack_ps.md
+++ b/docs/reference/commandline/stack_ps.md
@@ -34,8 +34,12 @@ Options:
 
 ## Description
 
-Lists the tasks that are running as part of the specified stack. This
-command has to be run targeting a manager node.
+Lists the tasks that are running as part of the specified stack.
+
+> **Note**: This is a cluster management command. When using swarm as an orchestrator,
+> this command must be executed on a swarm manager node. To learn about managers
+> and workers, refer to the [Swarm mode section](https://docs.docker.com/engine/swarm/)
+> in the documentation.
 
 ## Examples
 
diff --git a/docs/reference/commandline/stack_rm.md b/docs/reference/commandline/stack_rm.md
index b9d48a345ae1..7bc70617126f 100644
--- a/docs/reference/commandline/stack_rm.md
+++ b/docs/reference/commandline/stack_rm.md
@@ -32,8 +32,12 @@ Options:
 
 ## Description
 
-Remove the stack from the swarm. This command has to be run targeting
-a manager node.
+Remove the stack from the swarm.
+
+> **Note**: This is a cluster management command. When using swarm as an orchestrator,
+> this command must be executed on a swarm manager node. To learn about managers
+> and workers, refer to the [Swarm mode section](https://docs.docker.com/engine/swarm/)
+> in the documentation.
 
 ## Examples
 
diff --git a/docs/reference/commandline/stack_services.md b/docs/reference/commandline/stack_services.md
index 2f60df426739..169fac939e14 100644
--- a/docs/reference/commandline/stack_services.md
+++ b/docs/reference/commandline/stack_services.md
@@ -32,8 +32,12 @@ Options:
 
 ## Description
 
-Lists the services that are running as part of the specified stack. This
-command has to be run targeting a manager node.
+Lists the services that are running as part of the specified stack.
+
+> **Note**: This is a cluster management command. When using swarm as an orchestrator,
+> this command must be executed on a swarm manager node. To learn about managers
+> and workers, refer to the [Swarm mode section](https://docs.docker.com/engine/swarm/)
+> in the documentation.
 
 ## Examples
 
diff --git a/docs/reference/commandline/swarm_ca.md b/docs/reference/commandline/swarm_ca.md
index 18c7ad2ebb00..a7113afb5d2f 100644
--- a/docs/reference/commandline/swarm_ca.md
+++ b/docs/reference/commandline/swarm_ca.md
@@ -33,7 +33,11 @@ Options:
 
 ## Description
 
-View or rotate the current swarm CA certificate. This command must target a manager node.
+View or rotate the current swarm CA certificate.
+
+> **Note**: This is a cluster management command, and must be executed on a swarm
+> manager node. To learn about managers and workers, refer to the [Swarm mode
+> section](https://docs.docker.com/engine/swarm/) in the documentation.
 
 ## Examples
 
diff --git a/docs/reference/commandline/swarm_join_token.md b/docs/reference/commandline/swarm_join_token.md
index 3786ebf2413f..8f15ffacaa64 100644
--- a/docs/reference/commandline/swarm_join_token.md
+++ b/docs/reference/commandline/swarm_join_token.md
@@ -34,6 +34,10 @@ role. You pass the token using the `--token` flag when you run
 [swarm join](swarm_join.md). Nodes use the join token only when they join the
 swarm.
 
+> **Note**: This is a cluster management command, and must be executed on a swarm
+> manager node. To learn about managers and workers, refer to the [Swarm mode
+> section](https://docs.docker.com/engine/swarm/) in the documentation.
+
 ## Examples
 
 You can view or rotate the join tokens using `swarm join-token`.
diff --git a/docs/reference/commandline/swarm_unlock.md b/docs/reference/commandline/swarm_unlock.md
index 7b00c49a4be3..eb64c1a5ff81 100644
--- a/docs/reference/commandline/swarm_unlock.md
+++ b/docs/reference/commandline/swarm_unlock.md
@@ -31,6 +31,10 @@ used to reactivate a manager after its Docker daemon restarts if the autolock
 setting is turned on. The unlock key is printed at the time when autolock is
 enabled, and is also available from the `docker swarm unlock-key` command.
 
+> **Note**: This is a cluster management command, and must be executed on a swarm
+> manager node. To learn about managers and workers, refer to the [Swarm mode
+> section](https://docs.docker.com/engine/swarm/) in the documentation.
+
 ## Examples
 
 ```bash
diff --git a/docs/reference/commandline/swarm_unlock_key.md b/docs/reference/commandline/swarm_unlock_key.md
index a6267221b9be..43a6085787c8 100644
--- a/docs/reference/commandline/swarm_unlock_key.md
+++ b/docs/reference/commandline/swarm_unlock_key.md
@@ -35,6 +35,10 @@ swarm.
 You can view or rotate the unlock key using `swarm unlock-key`. To view the key,
 run the `docker swarm unlock-key` command without any arguments:
 
+> **Note**: This is a cluster management command, and must be executed on a swarm
+> manager node. To learn about managers and workers, refer to the [Swarm mode
+> section](https://docs.docker.com/engine/swarm/) in the documentation.
+
 ## Examples
 
 ```bash
diff --git a/docs/reference/commandline/swarm_update.md b/docs/reference/commandline/swarm_update.md
index 9caea3c7d5aa..fd3c4e2ce83f 100644
--- a/docs/reference/commandline/swarm_update.md
+++ b/docs/reference/commandline/swarm_update.md
@@ -33,7 +33,11 @@ Options:
 
 ## Description
 
-Updates a swarm with new parameter values. This command must target a manager node.
+Updates a swarm with new parameter values.
+
+> **Note**: This is a cluster management command, and must be executed on a swarm
+> manager node. To learn about managers and workers, refer to the [Swarm mode
+> section](https://docs.docker.com/engine/swarm/) in the documentation.
 
 ## Examples